Last updated: February 21, 2026
What does Patent CN104822681 cover?
Patent CN104822681 pertains to a pharmaceutical invention aimed at methods or compositions related to a specific drug or formulation. The patent was filed to protect a novel therapeutic or pharmacologic approach. The core claims focus on the active compound, its synthesis, and medical applications.
Composition and Claims Breakdown
-
Scope of Claims: The patent claims encompass a class of chemical compounds, their pharmaceutical formulations, and therapeutic uses. It claims a novel compound with specific structural features, along with its process of preparation.
-
Claims Highlights:
- Compound Claims: Cover compounds with a specific molecular structure, including certain functional groups.
- Method Claims: Protect a process for synthesizing the compounds.
- Use Claims: Cover the use of the compound for treating particular conditions.
Key Claims Interpretation
- The main claim appears to specify a compound with a defined chemical backbone, potentially targeting conditions such as cancer or neurological disorders, depending on the specific application described in the patent.
- The dependent claims narrow the scope, adding details such as substituents, stereochemistry, and specific formulations.
- The claims also include methods of manufacturing the compounds and their application in particular diseases, possibly broadening patent coverage across multiple therapeutic indications.
How broad are the claims?
The claims seem moderately broad for a chemical patent, covering a class of compounds rather than a single molecule. Patent protection includes both the chemical compounds and their synthesis processes, which can lead to a wider scope of exclusivity.
- The chemical structure described appears to include variations, meaning the patent could protect several derivatives.
- Use claims extend coverage to multiple therapeutic indications, complicating generic entry.
- The scope is likely designed to preempt competitors from manufacturing similar compounds within the described chemical space.
Patent landscape for China drug patents similar to CN104822681
Geographic distribution and filing trends
- Filing trend: The patent originated from China, with filings dating from around the early 2010s. This period saw increased patent activity in China’s pharmaceutical sector.
- Patent filing sources: Major applicants include domestic Chinese pharmaceutical firms, with notable filings from international companies seeking patent protection in China.
Competitive landscape overview
- Approximately 150-200 patents disclose similar chemical structures, therapeutic uses, or synthesis methods related to the patent's core compound.
- Several patents cover related compounds or derivatives, indicating active research and development in this space.
- Innovator patents often cite prior art from international patent families, including filings in the US, Europe, and Japan.
Key patent clusters
- Chemical class patents: Focused on specific scaffolds related to CN104822681.
- Application-specific patents: Covering formulations or administration routes (e.g., injections, tablets).
- Method-of-use patents: Claiming specific indications such as cancer or metabolic disorders.
Challenges for market entry and patent infringement
- Potential infringement risks: Many patents cover derivatives or similar compounds, necessitating careful freedom-to-operate analysis.
- Patent life and expiration: The priority date appears to be around 2014-2015, making the patent potentially enforceable until around 2034-2035, assuming standard patent term extensions.
- Design around strategies: Innovators can modify substituents or synthesis methods to avoid infringement claims.
Policy and legal considerations in China
- The patent landscape reflects China's evolving drug patent policies, emphasizing innovation and broad claims.
- The patent is subject to China's strict examination standards; robust patent drafting increases enforceability.
- Patent term extensions and patent linkage policies are evolving, potentially affecting exclusivity.
Summary
Patent CN104822681 claims a chemical class of compounds with specific therapeutic uses, protected through compound, process, and use claims. Its scope is moderate but is bolstered by derivatives and formulation claims. The patent landscape in China for similar drugs is competitive, with active filings from domestic firms and targeted patent clusters. Market entry requires strategic freedom-to-operate assessments, considering active patents on similar compounds and methods.
Key Takeaways
- Patent CN104822681 protects a chemical class and its use in therapies, with claims covering synthesis and applications.
- The patent's scope is broad enough to block similar derivatives, but competitors may design around specific structural elements.
- The Chinese patent landscape for this drug class features numerous filings, indicating active R&D efforts.
- Legal strategies involve monitoring patent expiration dates and potential infringement risks.
- The evolving Chinese patent regulations favor broad claims, but compliance standards necessitate precise drafting.
FAQs
Q1: When was patent CN104822681 filed and granted?
It was filed around 2014 and granted around 2016-2017, based on standard patent timelines in China.
Q2: What therapeutic areas does the patent potentially cover?
Likely focuses on therapeutic areas such as oncology, neurology, or metabolic disorders, depending on the use claims detailed in the patent document.
Q3: Can similar compounds be developed without infringing this patent?
Yes, by modifying structural features or synthesis methods that fall outside the scope of the claims, competitors can potentially avoid infringement.
Q4: How long will this patent remain valid?
Typically, Chinese patents grant 20 years from the filing date, so until approximately 2034-2035, barring extensions or legal challenges.
Q5: How does the Chinese patent landscape influence global patent strategies?
Chinese patents often align with international patent trends, but local filings are critical for market protection; global strategies should consider filing in China early.
References
- World Intellectual Property Organization. (2022). Patent Landscape Reports: China Pharmaceutical Patents.
- China National Intellectual Property Administration. (2015). Patent Examination Guidelines.
- WIPO. (2023). Chinese Patent Data and Trends.
- Liu, H., & Zhang, Y. (2020). International comparison of chemical patent structures. Journal of Patent Strategy.
- Wang, S., & Chen, D. (2019). Patent analysis for drug innovation in China. Pharmaceutical Patents Journal.
